Home / 30,186.18-45,264.68-12,651.30

Finding the Fourth Proportional to 30,186.18, 45,264.68 and 12,651.30

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Solution

The fourth proportional to 30,186.18, 45,264.68 and 12,651.30 is: 18,970.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,186.18 : 45,264.68 = 12,651.30 : x
  2. Step 2: Convert to fraction form
    30,186.18/45,264.68 = 12,651.30/x
  3. Step 3: Cross multiply
    30,186.18x = 45,264.68 × 12,651.30
  4. Step 4: Simplify right side
    30,186.18x = 572,657,046.08
  5. Step 5: Solve for x
    x = 572,657,046.08/30,186.18
  6. Step 6: Final answer
    x = 18,970.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.